Table 1.
Patient cohort and characteristics and statistical comparisons between intubated and nonintubated patient groups.
| Characteristics | Overall (N=2481) | Intubated (n=239) | Nonintubated (n=2242) | P value | |
| Age (years) | <.001 | ||||
|
|
Mean (SD) | 60.4 (17.7) | 64.9 (12.4) | 59.9 (18.1) | |
|
|
Median (min-max) | 62.2 (18-120) | 65.5 (20-94) | 62.0 (18-120) | |
| Gender, mean (SD) | .03 | ||||
|
|
Male | 1390 (56.1) | 135 (64) | 1237 (55.2) | |
|
|
Female | 1089 (43.9) | 86 (36) | 1003 (44.7) | |
|
|
Other | 2 (0.08) | 0 (0) | 2 (0.1) | |
| Race and ethnicity, mean (SD) | <.001 | ||||
|
|
White | 819 (32.9) | 72 (30.1) | 746 (33.3) | |
|
|
African American | 456 (18.4) | 24 (10) | 433 (19.3) | |
|
|
Hispanic | 600 (24.2) | 65 (27.2) | 536 (23.9) | |
|
|
Asian | 129 (5.2) | 13 (5.4) | 116 (5.2) | |
|
|
Other | 358 (14.4) | 50 (20.9) | 308 (13.7) | |
|
|
Unspecified | 119 (4.8) | 15 (6.3) | 103 (4.6) | |
| BMI | .03 | ||||
|
|
Mean (SD) | 29.4 (7.3) | 30.5 (8.2) | 29.3 (7.2) | |
|
|
Median (min-max) | 28.3 (12.5-69.3) | 28.7 (12.4-60.5) | 28.3 (12.5-69.3) | |
| Smoking history, mean (SD) | .73 | ||||
|
|
Current smoker | 24 (0.9) | 1 (0.4) | 23 (1) | |
|
|
Past smoker | 558 (22.5) | 48 (20.1) | 510 (22.7) | |
|
|
Never smoked | 78 (3.1) | 9 (3.8) | 69 (3.1) | |
|
|
Missing | 1821 (73.4) | 181 (75.7) | 1640 (73.2) | |
| Hypertension, mean (SD) | .07 | ||||
|
|
Yes | 1289 (51.9) | 130 (54.4) | 1159 (51.7) | |
|
|
No | 1013 (40.8) | 79 (33) | 934 (41.7) | |
|
|
Missing | 179 (7.2) | 30 (12.6) | 149 (6.6) | |
| Diabetes, mean (SD) | <.001 | ||||
|
|
Yes | 854 (34.4) | 112 (46.9) | 742 (33.1) | |
|
|
No | 1448 (58.4) | 97 (40.5) | 1351 (60.3) | |
|
|
Missing | 179 (7.2) | 30 (12.6) | 149 (6.6) | |
| Chronic obstructive pulmonary disease, mean (SD) | .41 | ||||
|
|
Yes | 399 (16.1) | 41 (17.1) | 358 (16) | |
|
|
No | 1903 (76.7) | 168 (70.3) | 1735 (77.4) | |
|
|
Missing | 179 (7.2) | 30 (12.6) | 149 (6.6) | |
| Obesity, mean (SD) | <.001 | ||||
|
|
Yes | 445 (17.9) | 64 (26.8) | 381 (17) | |
|
|
No | 1857 (74.9) | 145 (60.7) | 1712 (76.4) | |
|
|
Missing | 179 (7.2) | 30 (12.5) | 149 (6.6) | |
| Length of stay (days) | .14 | ||||
|
|
Mean (SD) | 6.6 (6.2) | 7.2 (8.2) | 6.5 (6.1) | |
|
|
Median (min-max) | 4.9 (1-72) | 4.7 (1-72) | 4.9 (1-48) | |
| Intensive care unit care received, mean (SD) | <.001 | ||||
|
|
Yes | 470 (18.9) | 239 (100) | 231 (10.3) | |
|
|
No | 2011 (81.1) | 0 (0) | 2011 (89.7) | |